Manchester Terrier is a ratter, bred to hunt and dispatch rats. A cross between a Whippet and an unknown terrier, the breed quickly became the favorite of anyone in need of vermin control, and in the early 1800s in England, that was just about every business owner who handled or served food. Until 1959, the Manchester Terrier and Toy Manchester Terrier were registered as two separate breeds, although interbreeding was permissible; however, today they are registered as one breed with two sizes.

The Manchester Terrier is sleek and elegant, yet sturdy. The two Manchester Terrier varieties are divided by weight, with toy Manchester Terriers weighing no more than 12 pounds. The standard Manchester Terriers weigh between 12 and 22 pounds. The head is long and narrow, and the eyes are small. The toy Manchester Terriers have naturally erect ears, while the standard Manchester Terriers may have naturally erect or cropped ears. The tail tapers to the hock. The coat is short and smooth.

The only acceptable color is black with rich mahogany markings. Grooming the Manchester Terrier dog breed consists of a weekly brushing with a soft bristle brush. Manchester Terriers are active and playful and enjoy brisk walks, a game of catch, and a session of flyball, but they also like to cuddle and are happy to snuggle up with their owner on the sofa. Many enjoy canine sports.

The Manchester Terrier dogs are not as tenacious as some other terrier breeds, but they can still be a touch independent and stubborn when they wish to be. Training should be structured and firm, but with fun mixed in so that the dog wants to cooperate. This breed can be wary of strangers, so early socialization is a good idea. Manchesters do best with owners who understand the terrier temperament.

The Manchester Terrier dog breed can be great with kids, as Manchester Manchester Terriers love to play; however, they will not tolerate rough handling. This breed is usually good with other dogs but should not be trusted with smaller pets. Health concerns include a sensitivity to anesthetics, von Willebrand disease, and thyroid disease.